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D(2) dopamine
receptor
Voltage-
dependent
P/Q-type
calcium channel
subunit
alpha-1A
Voltage-
dependent
L-type calcium
channel subunit
beta-1
Voltage-
dependent
calcium channel
subunit
alpha-2/delta-2
Sodium-
dependent
dopamine
transporter
Synaptic
vesicular amine
transporter
Aromatic-L-
amino-acid
decarboxylase
Tyrosine
3-monooxygenase
Dopamine
Ca
+
Fluspirilene
Ca
+
Dopamine
Dopamine
Fluspirilene
Fluspirilene
Fluspirilene
L-Dopa
CO
2
L-Tyrosine
Tetrahydrobiopterin
O
2
Dihydrobiopterin
H
2
O
Na
+
Na
+
Pyridoxal
5'-phosphate
Gi signaling
cascade
Fe2+
Cytosol
Postsynaptic Neuron
Presynaptic Neuron
Cytosol
Synaptic Vesicle
Synapse
Fluspirilene is a D2
receptor antagonist. D2
receptors in the mesolimbic
pathway are responsible for
producing symptoms in
psychosis
antipsychotic effect
Brain
Mesolimbic pathway
Blood vessel - blood brain
barrier
Passive Diffusion
Fluspirilene is a relatively
long-acting injectable depot
Large deltoid or gluteal
muscle of upper arm or butt
cheek
DRD2
CACNA1A
CACNB1
CACNA2D2
SLC6A3
SLC18A2
DDC
TH
Dopamine
Calcium
Fluspirilene
Calcium
Dopamine
Dopamine
Fluspirilene
Fluspirilene
Fluspirilene
L-Dopa
Carbon dioxide
L-Tyrosine
Tetrahydrobiopterin
Oxygen
Dihydrobiopterin
Water
Sodium
Sodium
Gi signaling
cascade
DRD2
CACNA1A
CACNB1
CACNA2D2
SLC6A3
SLC18A2
DDC
TH
LDP
Ca
+
Imap
Ca
+
LDP
LDP
Imap
Imap
Imap
L-Dopa
CO
2
Tyr
BH4
O
2
BH3
H
2
O
Na
+
Na
+
Pyr-5'P
Gi si c
Fe2+
Cytosol
Postsynaptic Neuron
Presynaptic Neuron
Cytosol
Synaptic Vesicle
Synapse
Fluspirilene is a D2
receptor antagonist. D2
receptors in the mesolimbic
pathway are responsible for
producing symptoms in
psychosis
antipsychotic effect
Brain
Mesolimbic pathway
Blood vessel - blood brain
barrier
Passive Diffusion
Fluspirilene is a relatively
long-acting injectable depot
Large deltoid or gluteal
muscle of upper arm or butt
cheek